Title:
【発明の名称】全2重ビデオ通信システム
Document Type and Number:
Japanese Patent JPH05502745
Kind Code:
A
Abstract:
Each terminal in a full-duplex communication system comprises a computer-controlled display screen such as a CRT, at least one input means such as a keyboard, a mouse or a light pen and bidirectional communication means through which the terminals are interconnected. Each communication means comprises a receiver for receiving display information received at the terminal from the remote terminal(s) and a transmitter for transmitting information to the remote terminal(s) where it is displayed. In accordance with the invention, each terminal also comprises control means which periodically read sits input means and communications means and uses the information contained therein to control the content of its display. Further, the control means at each terminal also provides to its transmitter instructions which are transmitted to the remote terminal to change the display at the remote terminal so that all the displays are the same. As a result of this arrangement, changes in the display that are made at the same time by the user at the local terminal and by the user at the remote terminal are entered on the display screens at both terminals at substantially the same time so far as is discernable by the users. As a result, not only can each user interact with the display but it is also possible for each user to interact with the other users through the display without having to wait for one user to complete his entry of information as in the prior art. As a result, truly interactive communication is possible through the display.
Inventors:
Richard Tannenbaum
Application Number:
JP50198690A
Publication Date:
May 13, 1993
Filing Date:
December 13, 1990
Export Citation:
Assignee:
Options Unlimited Research Corporation
International Classes:
G06F15/00; G06F3/14; G06F13/00; G06F15/16; G06F15/177; G06F17/24; H04M11/08; (IPC1-7): G06F15/00; G06F15/16
Attorney, Agent or Firm:
Yoshikazu Tani